EP0315290B1 - Atherectomy catheter - Google Patents
Atherectomy catheter Download PDFInfo
- Publication number
- EP0315290B1 EP0315290B1 EP19880303865 EP88303865A EP0315290B1 EP 0315290 B1 EP0315290 B1 EP 0315290B1 EP 19880303865 EP19880303865 EP 19880303865 EP 88303865 A EP88303865 A EP 88303865A EP 0315290 B1 EP0315290 B1 EP 0315290B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tubular member
- distal end
- outer tubular
- catheter device
- cutter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3205—Excision instruments
- A61B17/3207—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions
- A61B17/320758—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions with a rotating cutting instrument, e.g. motor driven
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
- A61M25/0068—Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
- A61M25/0069—Tip not integral with tube
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2217/00—General characteristics of surgical instruments
- A61B2217/002—Auxiliary appliance
- A61B2217/005—Auxiliary appliance with suction drainage system
Description
- This invention relates generally to intravascular catheters, and more particularly to the design of an atherectomy catheter useful in restoring patency to a blood vessel that is blocked or partially blocked by atheromas or other form of stenotic or thrombotic lesion.
- The build-up of atheromas or the formation of thrombi in a blood vessel can cause serious circulatory problems and when complete blockages occur, distal tissues may be deprived of oxygen and nutrients leading to death of those cells distally of the blockage. Thus, the formation of an atheroma in a coronary artery can lead to a coronary infarction, especially when the artery becomes so narrowed by the plaque build-up that a tiny clot or thrombus cannot pass. Similarly, an atheroma or other type of stenotic lesion in a peripheral vein or artery can have a corresponding affect on tissue and cells supplied by the blocked blood vessel.
- The treatment of such a condition naturally depends upon the location or site of the blockage. In the case of a blocked or partially blocked coronary artery, it has been the practice to conduct open-heart surgery wherein the blocked vessel is by-passed with an autograft. Similarly, blood vessel shunts have been installed in other body areas as well. Such surgery, however, tends to be quite traumatic involving opening the patient's chest and pericardium in the case of coronary by-pass surgery or extensive excision and vessel replacement in the case of other peripheral blockages.
- More recently, following the technique credited to A. Grunzig, a balloon catheter may be used to restore patency to a blood vessel without extensive surgery. A catheter having a small inflatable balloon on its distal end may be routed through the vascular system to the site of the constriction or blockage and when the deflated balloon is appropriately positioned to span the blockage, a fluid may be introduced into the proximal end of the catheter to inflate the balloon to a sufficiently high pressure whereby the blockage may be spread open and patency restored.
- As is pointed out in the Auth U.S. Patent 4,445,509, there are certain deficiencies in the Grunzig procedure which render it ineffective in certain applications. For example, the blockage may be such that it is now possible to safely force the distal tip of the catheter through the blockage prior to the inflation of the balloon. In such a situation it would be desirable if one could safely "tunnel" through the blockage using an appropriate cutting tool. Once a passage has been formed during such tunnelling operation, a balloon can be advanced into the occlusion until it is totally across it. Once so positioned, the balloon can then be identified and the angioplasty procedure completed.
- WO-A-81 1363 discloses a surgical device for cutting and removing tissue with a high degree of accuracy from locations which would otherwise be inaccessible. The device comprises a pair of coaxial tubes which may be rotated relative to one another, each of said tubes having respective end walls in which are formed apertures. The arrangement is such that, as the tubes are rotated relative to one another, the two apertures move in and out of registry with one another, thus resulting in a cutting action. Suction through the inner tube removes debris resulting from the cutting operation.
- In accordance with the present invention, there is provided an atherectomy catheter device having an outer elongate flexible tubular member having a proximal end and a distal end, said distal end being of an outside diameter which is smaller than the outside diameter of the remaining portion of said outer tubular member,
an inner elongate flexible tubular member coaxially disposed within said outer tubular member and having a proximal end and a distal end with the outside diameter of said inner tubular member being generally equal to the inside diameter of said outer tubular member at said distal end of said outer tubular member;
drive means disposed at the proximal ends of said outer and inner tubular members for rotating said inner tubular member relative to said outer tubular member;
said device being characterised in that said distal end of said inner tubular member extends out beyond the distal end of said outer tubular member;
in that a cutter member is affixed to said distal end of said inner tubular member, said cutter member having a tubular portion surrounding said distal end of said outer tubular member and a dome-shaped distal end portion, the outside diameter of said tubular portion of said cutter member being generally equal to the outside diameter of said remaining portion of said outer tubular member,
and in that a plurality of openings is formed through said dome-shaped portion and in fluid communication with the lumen of said inner tubular member. - Preferably the drive means which is configured to rotate the inner tubular member relative to the outer tubular member, is further operable to allow the simultaneous perfusion of a liquid through the outer tubular member and the aspiration of fluids through the lumen of the inner tubular member. In this fashion, upon insertion of the catheter within the patient's vascular system and advancing the distal tip portion thereof to the site of the lesion to be excised, the site can be flooded with a flushing liquid and when the cutter is driven at high speed and advanced into the lesion, the fluids and debris sectioned from the lesion can be aspirated through the lumen of the inner tubular member and collected in a suitable vessel at the proximal end of the assembly. By driving the cutter at a relatively high speed, e.g. 30,000 rpm, the cutter, as configured, finely divides the fatty lesion and effectively liquifies the material prior to its being aspirated back through the lumen of the cutter tube.
- It is accordingly a principal object of the present invention to provide a catheter assembly including an outer elongated flexible tubular member and a concentrically disposed, loosely fitting elongated inner tubular member, the inner tubular member being provided with a cutter attachment at its distal end and adapted to be driven by a drive means disposed at the proximal end of the catheter assembly.
- Another object of the invention is to provide an atherectomy catheter in which a rotatable cutter is disposed at the distal end thereof and means are provided at the proximal end for driving the cutter at the high rotational speed while simultaneously injecting a flushing liquid and aspirating the treatment site.
- These and other objects and advantages of the invention will become apparent to those skilled in the art from the following detailed description of a preferred embodiment, especially when considered in conjunction with the accompanying drawings in which like numerals in the several views refer to corresponding parts.
- Figure 1 is a partially sectioned view illustrating a preferred embodiment of the present invention;
- Figure 2 is a greatly enlarged view of one cutter head arrangement;
- Figure 3 is an end view of the cutter head of Figure 2; and
- Figure 4 is a greatly enlarged side elevation of an alternative cutter head arrangement.
- Referring to Figure 1, the surgical device of the present invention is seen to comprise an atherectomy catheter which is indicated generally by
numeral 10. It includes an outer elongated, flexibletubular member 12 having aproximal end 14 and adistal end 16. Disposed within the lumen of the outertubular member 12 is an elongated flexible innertubular member 18 which extends the full length of the outer tubular member. - Referring to Figure 2, it can be seen that near the
distal end 16 of the outer tube, a series ofports 20 are formed through the wall thereof and it tapers down to adistal end portion 22 which is of a lesser outside diameter than the remaining portion of thecatheter body 12. Thus, anannular space 24 is created between the outside diameter of theinner tube 18 and the inside diameter of theouter tube 12. As will be illustrated subsequently, when a liquid is appropriately injected at the proximal end of the catheter assembly, it will profuse through thisflush lumen 24 and exit theports 20. - The outer tubular member in
zone 22 conforms to the outside dimension of the innertubular member 18 and provides a bearing surface for the innertubular member 18 as it is driven. Adhesively joined to the portion of the innertubular member 18 which extends distally beyond the end of the outertubular member 12 is anannular spacer 26 and bonded to thespacer 26 is acutter head 28. - With reference to Figures 1 and 3, one style of cutter head is seen to comprise a generally
tubular portion 30, which at least partially surrounds thedistal end 16 of the outertubular member 12, and a radially disposedarcuate loop 32 which projects longitudinally outward from the distal end of thetubular portion 30 of thecutter head 28. The loop effectively divides the open end of the tubular cutter member into a pair ofopenings 34 through which blood, a flushing liquid, and any tissue debris may be drawn when a vacuum or negative pressure is suitably applied to the proximal end of the innertubular member 18. - The outer
tubular member 12 is preferably extruded from a plastic selected from the group including polyester, nylon and polyolefin. The innertubular member 18 may also be formed with a like plastic, but with polyester being preferred. Thecutter member 28 can be fabricated from either metal or plastic and the overall outside diameter thereof, as well as that of the outertubular member 12, is determined by the particular location of the atheroma to be treated and the size of the blood vessels leading thereto. - Connected to the proximal end of the outer tubular member is a drive means 36 which, among other functions, is used to rotate the inner tubular member within the lumen of the outer
tubular member 12. With reference to Figure 1, it is seen to include a rigidtubular housing 38 having aplug 40 fitted into the distal end thereof. Extending through a bore formed in theplug 40 is a fitting 42, preferably of the compression type, for joining the outertubular member 12 to theinterior chamber 44 of thetubular housing 38. - Disposed within the
housing 38 is a rotary union, indicated generally bynumeral 46. It comprises an outertubular sleeve member 48 fastened to thehousing 38 bypins 50. These pins preclude relative rotation between thetubular sleeve 48 and thehousing 38. To prevent the flushing liquid from passing from thechamber 44 beyond therotary union 46, O-rings, as at 52, are disposed in annular grooves spanning thetubular sleeve 48. The rotary union further comprises ahollow manifold member 54 which fits within the bore of the outertubular sleeve 48. This manifold member is dimensioned so as to rotate within that bore when driven by a motor means. In the preferred embodiment, an air motor of the type found in dental drills or the like may be used. Typically, such motors may be designed to rotate at very high speeds, e.g., 30,000 rpm. Theshaft 58 of that motor is keyed in acoupling 60 connected to the proximal end of thehollow manifold member 54. - Formed between the outer
tubular sleeve 48 and the manifold member contained therein is anannular recess 62 which is ported to the interior of the hollow manifold member. Furthermore, atubular fitting 64 passes through a bore formed radially through the side wall of the rigidtubular housing 38 and through the wall of the outertubular sleeve 48 to communicate with thatrecess 62. The rotatablehollow manifold 54 is also joined to the proximal end of the inner elongated flexibletubular member 18 by asuitable coupler 66. - In use, the elongated catheter assembly is appropriately introduced into the vascular system and advanced until the
cutter tip 32 is positioned closely adjacent to the atheroma or other lesion to be excised. Next, a flushing liquid may be introduced through thefitting 68 and into thechamber 44 of the drive means 36. From there, the liquid flows through the lumen of the outertubular member 12 between its inner wall and the outer wall of theinner tubular member 18. The liquid then exits theports 20 formed through the side wall of the outer tubular member near its distal end. When a suitable source of negative pressure is applied to the suction fitting 64, the flush liquid along with blood and/or tissue debris, which may be filed from the atheroma, is drawn through theopenings 34 formed in the distal end of thecutter 30, through the lumen of the inner tubular member or drivetube 18, and thence through thecoupler 66 and into thehollow manifold member 54. The fluid then flows through a port communicating with theannular recess 62 and then out the suction fitting 64 into a suitable receptacle (not shown). At the same time, when the motor means 56 is energized, it drives the hollow manifold member of the rotary union within its tubular sleeve and thedrive tube 18 coupled thereto bycoupler 66. When the catheter is advanced, and modest pressure is applied between thecutter loop 32 and the tissue being excised, that tissue is finally divided by the rapidly spinning cutter load and washed by blood and flushing liquid through the central lumen of thetube 18 and into the collecting receptacle connected to thesuction fitting 64. Once the atheroma has been completely penetrated, blood flow through the blood vessel is restored. - Referring to Figure 4, there is shown a side elevation of an alternative design for the
cutter head 28. As in the embodiment of Figures 1 through 3, the cutter head is attached to the distal end ofdrive tube 18 for rotation therewith. Rather than having a cuttingloop 32 effectively defining twoaspiration openings 34, the cuttinghead 28 of Figure 4 comprises a hollow, bullet-shaped,thin wall sleeve 70 having a hemispherical shapeddistal end 72. With no limitation intended, thesleeve 70 may have a thickness of 0.005 inches and a dome radius of 0.50 inches. It may have an overall length on the order of 0.125 inches and can be secured to the end oftube 18 in the same manner ascutter head 30 of Figure 2. - Formed through the hemispherical end portion of the cutter head of Figure 4 is a pattern of
holes 74. The number of and size of theholes 74 is preferably such that their total area is generally equal to the cross-sectional area of the lumen of thedrive tube 18. Also, the diameter of theholes 74 should be two to three times the thickness of the wall of thedome portion 72. For a dome thickness of 0.005 inches, approximately 42 holes, each 0.015 inches in diameter has been found to produce excellent results.Holes 42 are preferably formed in a laser drilling operation. In use, when the drive tube is rotated as previously described, and the cutter head of Figure 4 is advanced against the atheroma to be excised, the cutter head acts like a grater to finely divide the fatty tissue of the atheroma so that the debris, along with flush liquid and body fluids can be aspirated back through the cutter openings and the lumen of theinner tube 18 to the collection chamber (not shown).
Claims (9)
- An atherectomy catheter device (10) having an outer elongate flexible tubular member (12) having a proximal end (14) and a distal end (16), said distal end being of an outside diameter which is smaller than the outside diameter of the remaining portion of said outer tubular member,
an inner elongate flexible tubular member (18) coaxially disposed within said outer tubular member and having a proximal end and a distal end with the outside diameter of said inner tubular member being generally equal to the inside diameter of said outer tubular member at said distal end of said outer tubular member;
drive means (36) disposed at the proximal ends of said outer and inner tubular members for rotating said inner tubular member relative to said outer tubular member;
said device being characterised in that said distal end of said inner tubular member extends out beyond the distal end of said outer tubular member;
in that a cutter member (28) is affixed to said distal end of said inner tubular member, said cutter member having a tubular portion (30) surrounding said distal end of said outer tubular member and a dome-shaped distal end portion (32), the outside diameter of said tubular portion of said cutter member being generally equal to the outside diameter of said remaining portion of said outer tubular member,
and in that a plurality of openings (34) is formed through said dome-shaped portion and in fluid communication with the lumen of said inner tubular member. - The catheter device as in claim 1 in which said outer tubular member (12) has at least one orifice (20) extending through its side wall a predetermined distance proximal to said distal end (16) of said outer tubular member.
- The catheter device as in Claim 2 and further characterised by means (68, 44, 42) associated with said drive means (36) for injecting a liquid between the walls of said inner and outer tubular members, said liquid exiting the lumen of said outer tubular member through said at least one orifice (20).
- The catheter device as in Claim 1 further characterized by means associated with said drive means (36) for aspirating fluids through said plurality of openings (34) in said distal end portion of said cutter member (28), through the lumen of said inner tubular member (18) and out the proximal end of said inner tubular member as said inner tubular member is rotated.
- The catheter device as in Claim 1 in which said drive means (36) is characterized by,(a) a rigid tubular housing (38) having a plug (40) disposed in the distal end thereof;(b) a fitting (42) extending through said plug and joined to said proximal end (14) of said outer tubular member (12);(c) a rotary union (46) including(i) an outer tubular sleeve (48) keyed to and sealingly fitted within said rigid tubular housing;(ii) a hollow manifold member (54) journaled for rotation within said outer tubular sleeve and including an annular recess (62) formed between said manifold member and said tubular sleeve, said recess being in fluid communication with the interior of said hollow manifold;(d) means (66) coupling said manifold member to said proximal end of said inner tubular member.(e) motor means contained within said rigid tubular housing, the shaft of said motor means coupled to said manifold member to rotate same within said outer tubular sleeve; and(f) a fluid port (64) extending through said housing (38) and said tubular sleeve (48) communicating with said annular recess (62).
- The catheter device as in Claim 5 in which said motor means is air driven.
- The catheter device as in Claim 1 and further characterized by an annular spacer (26) joining said distal end of said inner tubular member (18) to said tubular portion (30) of said cutter member (28).
- The catheter device as in Claim 1 in which said plurality of openings (34) in said dome-shaped distal end portion (32) of said cutter member (28) define a radially disposed arcuate loop projecting longitudinally outward from the distal end of said tubular portion of said cutter member.
- The catheter device as in Claim 1 in which the total area of said plurality of openings (34) is generally equal to or greater than the cross-sectional area of the lumen of said inner tubular member.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US111715 | 1987-10-23 | ||
US07/111,715 US4857045A (en) | 1987-04-30 | 1987-10-23 | Atherectomy catheter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0315290A1 EP0315290A1 (en) | 1989-05-10 |
EP0315290B1 true EP0315290B1 (en) | 1992-07-22 |
Family
ID=22340068
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19880303865 Expired EP0315290B1 (en) | 1987-10-23 | 1988-04-28 | Atherectomy catheter |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0315290B1 (en) |
JP (1) | JPH01115352A (en) |
AU (1) | AU598364B2 (en) |
CA (1) | CA1288307C (en) |
DE (2) | DE3873024T2 (en) |
ES (1) | ES2034213T3 (en) |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0347098B1 (en) * | 1988-06-13 | 1996-02-28 | Samuel Shiber | Atherectomy system with a guide-wire |
US5100425A (en) * | 1989-09-14 | 1992-03-31 | Medintec R&D Limited Partnership | Expandable transluminal atherectomy catheter system and method for the treatment of arterial stenoses |
US5009659A (en) * | 1989-10-30 | 1991-04-23 | Schneider (Usa) Inc. | Fiber tip atherectomy catheter |
US5019088A (en) * | 1989-11-07 | 1991-05-28 | Interventional Technologies Inc. | Ovoid atherectomy cutter |
US5405318A (en) * | 1992-05-05 | 1995-04-11 | Baxter International Inc. | Ultra-sound catheter for removing obstructions from tubular anatomical structures such as blood vessels |
US5368558A (en) * | 1991-01-11 | 1994-11-29 | Baxter International Inc. | Ultrasonic ablation catheter device having endoscopic component and method of using same |
US5957882A (en) * | 1991-01-11 | 1999-09-28 | Advanced Cardiovascular Systems, Inc. | Ultrasound devices for ablating and removing obstructive matter from anatomical passageways and blood vessels |
US5368557A (en) * | 1991-01-11 | 1994-11-29 | Baxter International Inc. | Ultrasonic ablation catheter device having multiple ultrasound transmission members |
US5267954A (en) * | 1991-01-11 | 1993-12-07 | Baxter International Inc. | Ultra-sound catheter for removing obstructions from tubular anatomical structures such as blood vessels |
US5304115A (en) * | 1991-01-11 | 1994-04-19 | Baxter International Inc. | Ultrasonic angioplasty device incorporating improved transmission member and ablation probe |
US5380274A (en) * | 1991-01-11 | 1995-01-10 | Baxter International Inc. | Ultrasound transmission member having improved longitudinal transmission properties |
US5324255A (en) * | 1991-01-11 | 1994-06-28 | Baxter International Inc. | Angioplasty and ablative devices having onboard ultrasound components and devices and methods for utilizing ultrasound to treat or prevent vasopasm |
US5261877A (en) * | 1991-07-22 | 1993-11-16 | Dow Corning Wright | Method of performing a thrombectomy procedure |
WO1993008750A2 (en) * | 1991-11-04 | 1993-05-13 | Baxter International Inc. | Ultrasonic ablation device adapted for guidewire passage |
FR2685190B1 (en) * | 1991-12-23 | 1998-08-07 | Jean Marie Lefebvre | ROTARY ATHERECTOMY OR THROMBECTOMY DEVICE WITH CENTRIFUGAL TRANSVERSE DEVELOPMENT. |
DE9290167U1 (en) * | 1992-01-13 | 1994-09-15 | Schneider Usa Inc | Cutting tool for atherectomy catheters |
US5382228A (en) * | 1992-07-09 | 1995-01-17 | Baxter International Inc. | Method and device for connecting ultrasound transmission member (S) to an ultrasound generating device |
JP3038522B2 (en) * | 1993-03-15 | 2000-05-08 | ユーシンエンジニアリング株式会社 | Air purifying and deodorizing environmental purifier |
DE59406433D1 (en) * | 1993-05-07 | 1998-08-20 | Grieshaber & Co Ag | Ophthalmic surgical device for crushing and removing the lens nucleus from the eye of a living being |
US5417672A (en) * | 1993-10-04 | 1995-05-23 | Baxter International Inc. | Connector for coupling an ultrasound transducer to an ultrasound catheter |
US5427118A (en) * | 1993-10-04 | 1995-06-27 | Baxter International Inc. | Ultrasonic guidewire |
US5390678A (en) * | 1993-10-12 | 1995-02-21 | Baxter International Inc. | Method and device for measuring ultrasonic activity in an ultrasound delivery system |
EP0663217B1 (en) * | 1994-01-12 | 1999-09-15 | Dow Corning Enterprises | Rotating tip with shroud for catheter |
US6689086B1 (en) | 1994-10-27 | 2004-02-10 | Advanced Cardiovascular Systems, Inc. | Method of using a catheter for delivery of ultrasonic energy and medicament |
AU694915B2 (en) * | 1995-03-22 | 1998-08-06 | Evi Corporation | Intra-artery obstruction clearing apparatus and methods |
DE10243335A1 (en) * | 2002-09-18 | 2004-04-08 | Schubert, Werner, Dr.med. | Apparatus to increase perfusion through heart muscle tissue, in the treatment of heart disease, has an underpressure catheter inserted into a major heart vein |
US10675057B2 (en) | 2015-04-28 | 2020-06-09 | Cook Medical Technologies Llc | Variable stiffness cannulae and associated delivery systems and methods |
US10327933B2 (en) | 2015-04-28 | 2019-06-25 | Cook Medical Technologies Llc | Medical cannulae, delivery systems and methods |
US10555756B2 (en) | 2016-06-27 | 2020-02-11 | Cook Medical Technologies Llc | Medical devices having coaxial cannulae |
CN110381858A (en) * | 2017-03-16 | 2019-10-25 | 史密夫和内修有限公司 | Mechanically cutting instrument and correlation technique with outflow control |
CN108096688B (en) * | 2017-12-11 | 2023-08-22 | 宜兴市人民医院 | Drainage device |
CN108210019B (en) * | 2017-12-29 | 2020-11-27 | 王育 | Pectoral muscle cutter |
CN110141303B (en) * | 2019-06-06 | 2022-09-02 | 赛诺神畅医疗科技有限公司 | Apparatus for breaking thrombus and sucking thrombus |
WO2021044829A1 (en) * | 2019-09-04 | 2021-03-11 | テルモ株式会社 | Medical device |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3050052T1 (en) * | 1979-11-22 | 1982-03-18 | Unisearch Ltd | CO-AXIAL TUBE SURGICAL INFUSION / SUCTION CUTTER TIP |
AU534021B2 (en) * | 1979-11-22 | 1983-12-22 | Unisearch Limited | Surgical instrument |
US4273128A (en) * | 1980-01-14 | 1981-06-16 | Lary Banning G | Coronary cutting and dilating instrument |
US4679557A (en) * | 1984-09-10 | 1987-07-14 | E. R. Squibb & Sons, Inc. | Electrodynamic transluminal angioplasty system |
EP0191630B1 (en) * | 1985-02-13 | 1991-06-05 | Kensey Nash Corporation | Catheter with high speed drive means |
JPH0761330B2 (en) * | 1986-10-03 | 1995-07-05 | ケンジィ ナッシュ コーポレイション | Catheter with fast-moving working head for endo-surgical / medical procedures |
-
1988
- 1988-04-28 ES ES88303865T patent/ES2034213T3/en not_active Expired - Lifetime
- 1988-04-28 DE DE19883873024 patent/DE3873024T2/en not_active Expired - Fee Related
- 1988-04-28 EP EP19880303865 patent/EP0315290B1/en not_active Expired
- 1988-04-28 CA CA000565317A patent/CA1288307C/en not_active Expired - Fee Related
- 1988-04-28 AU AU15257/88A patent/AU598364B2/en not_active Ceased
- 1988-04-28 JP JP63107464A patent/JPH01115352A/en active Granted
- 1988-04-29 DE DE8805710U patent/DE8805710U1/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPH0441613B2 (en) | 1992-07-08 |
JPH01115352A (en) | 1989-05-08 |
DE3873024D1 (en) | 1992-08-27 |
EP0315290A1 (en) | 1989-05-10 |
AU1525788A (en) | 1989-04-27 |
CA1288307C (en) | 1991-09-03 |
DE8805710U1 (en) | 1988-07-28 |
AU598364B2 (en) | 1990-06-21 |
DE3873024T2 (en) | 1992-12-17 |
ES2034213T3 (en) | 1993-04-01 |
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